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<p class="MsoNormal" style="background:white;"><span class="MsoNormal" style="background:white;"><img src="saibamais.jpg" width="270" height="50" alt="Saiba Mais" /></span></p>
<p><span class="style2"><strong><span style="font-size:12.0pt; ">Checkpoint </span></strong><strong><span style="font-size:12.0pt; "> 3.1</span></strong></span></p>
<p class="MsoNormal" style="margin-top:0cm;margin-right:24.95pt;margin-bottom:.0001pt;margin-left:28.3pt;line-height:12.0pt;background:white;"><span style="font-size:12.0pt; ">When an appropriate  markup language exists, use markup rather than images to convey information.</span></p>
<p class="MsoNormal" style="margin-top:9.6pt;line-height:12.0pt;background:white;"><span style="letter-spacing:-.1pt; font-size:12.0pt; ">In  case of </span><span style="font-size:12.0pt; ">mathematical equations use MathML to construct and CSS (Cascading Style Sheets) to format the text and control the layout</span><span style="font-size:12.0pt; ">. Do not use image to represent text, prefer CSS.</span></p>
<p class="MsoNormal" style="margin-top:11.75pt;margin-right:195.85pt;margin-bottom:.0001pt;margin-left:204.5pt;"><span style="font-size:12.0pt; "><img width="116" height="90" src="2.2_clip_image002.jpg" alt=""/></span></p>
<p class="MsoNormal" style="background:white;"><span style="font-size:12.0pt; ">The MathML notation to the equation is:</span></p>
<p class="MsoNormal" style="margin-top:0cm;margin-right:414.7pt;margin-bottom:.0001pt;margin-left:.25pt;line-height:9.85pt;background:white;"><strong><span style="letter-spacing:-.35pt; font-family:'Courier New'; ">&lt;semantics&gt; </span></strong><strong><span style="font-family:'Courier New'; ">&lt;mrow&gt;</span></strong></p>
<p class="MsoNormal" style="margin-left:36.0pt;line-height:9.85pt;background:white;"><strong><span style="letter-spacing:-.25pt; font-family:'Courier New'; ">&lt;msubsup&gt;</span></strong></p>
<p class="MsoNormal" style="margin-top:0cm;margin-right:345.6pt;margin-bottom:.0001pt;margin-left:36.0pt;line-height:9.85pt;background:white;"><strong><span style="font-family:'Courier New'; ">&lt;mo&gt;?&lt;/mo&gt; &lt;mn&gt;0&lt;/mn&gt; &lt;mi&gt;t&lt;/mi&gt; </span></strong><strong><span style="font-family:'Courier New'; ">&lt;/msubsup&gt; &lt;mfrac&gt;</span></strong></p>
<p class="MsoNormal" style="margin-left:71.75pt;line-height:9.85pt;background:white;"><strong><span style="letter-spacing:-.3pt; font-family:'Courier New'; ">&lt;mrow&gt;</span></strong></p>
<p class="MsoNormal" style="margin-top:0cm;margin-right:311.05pt;margin-bottom:.0001pt;margin-left:.25pt;line-height:9.85pt;background:white;"><strong><span style="font-family:'Courier New'; ">&lt;mo&gt;d&lt;/mo&gt;  &lt;mi&gt;x&lt;/mi&gt; </span></strong><strong><span style="font-family:'Courier New'; ">&lt;/mrow&gt; &lt;mi&gt;x&lt;/mi&gt; &lt;/mfrac&gt;  &lt;/mrow&gt;</span></strong> </p>
<p class="MsoNormal" style="margin-top:0cm;margin-right:241.9pt;margin-bottom:.0001pt;margin-left:.25pt;line-height:9.85pt;background:white;"><strong><span style="font-family:'Courier New'; ">&lt;annotation-xml encoding=</span></strong><strong><span style="font-family:'Courier New'; ">&rdquo;</span></strong><strong><span style="font-family:'Courier New'; ">MathML-Content</span></strong><strong><span style="font-family:'Courier New'; ">&rdquo;</span></strong><strong><span style="font-family:'Courier New'; ">&gt; </span></strong><strong><span style="font-family:'Courier New'; ">&lt;apply&gt;</span></strong> </p>
<p class="MsoNormal" style="margin-left:36.0pt;line-height:9.85pt;background:white;"><strong><span style="font-family:'Courier New'; ">&lt;int/&gt;</span></strong></p>
<p class="MsoNormal" style="margin-left:36.0pt;line-height:9.85pt;background:white;"><strong><span style="font-family:'Courier New'; ">&lt;bvar&gt;&lt;ci&gt;x&lt;/ci&gt;&lt;/bvar&gt;</span></strong></p>
<p class="MsoNormal" style="margin-left:36.0pt;line-height:9.85pt;background:white;"><strong><span style="font-family:'Courier New'; ">&lt;lowlimit&gt;&lt;cn&gt;0&lt;/cn&gt;&lt;/lowlimit&gt;</span></strong> </p>
<p class="MsoNormal" style="margin-left:36.0pt;line-height:9.85pt;background:white;"><strong><span style="font-family:'Courier New'; ">&lt;uplimit&gt;&lt;ci&gt;t&lt;/ci&gt;&lt;/uplimit&gt;</span></strong> </p>
<p class="MsoNormal" style="margin-left:36.0pt;line-height:9.85pt;background:white;"><strong><span style="font-family:'Courier New'; ">&lt;apply&gt;</span></strong> </p>
<p class="MsoNormal" style="margin-top:0cm;margin-right:345.6pt;margin-bottom:.0001pt;margin-left:.25pt;line-height:9.85pt;background:white;"><strong><span style="font-family:'Courier New'; ">&lt;divide/&gt;  &lt;cn&gt;1&lt;/cn&gt; &lt;ci&gt;x&lt;/ci&gt; </span></strong><strong><span style="font-family:'Courier New'; ">&lt;/apply&gt;  &lt;/apply&gt;</span></strong> </p>
<p class="MsoNormal" style="margin-top:0cm;margin-right:380.15pt;margin-bottom:.0001pt;margin-left:.25pt;line-height:9.85pt;background:white;"><strong><span style="font-family:'Courier New'; ">&lt;/annotation-xml&gt; </span></strong><strong><span style="font-family:'Courier New'; ">&lt;/semantics&gt;</span></strong></p>
<p class="MsoNormal" style="margin-top:2.4pt;margin-right:51.85pt;margin-bottom:.0001pt;margin-left:0cm;line-height:24.0pt;background:white;"><span style="font-size:12.0pt; ">There are programs that do the convertation to this format. For more information</span><span style="font-size:12.0pt; ">: </span><u><span style="font-size:12.0pt; "><a href="http://www.w3.org/TR/REC-MathML/"><span style="color:windowtext; ">http://www.w3.org/TR/REC-MathML/</span></a></span></u></p>
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